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Diodes Incorporated AP3201AMHTR-G1
- Part No.:
- AP3201AMHTR-G1
- Manufacturer:
- Diodes Incorporated
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
AP3201AMHTR-G1.pdf
- Description:
- IC REG BUCK ADJ 2A 10HMSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,965
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Product details
Overview
AP3201AMHTR-G1 from BCD Semiconductor is a 380kHz fixed-frequency, current-mode asynchronous DC-DC buck converter in HMSOP-10 package, integrating a low-RDS(ON) N-channel high-side MOSFET to deliver up to 2A output current with peak efficiency of 93%. It features built-in UVLO (3.5–4.4V), thermal shutdown (160°C), overvoltage protection (FB > 1.1V), and programmable soft-start. Used in LCD TV power rails for stable 3.3V/2A local regulation.
For engineers reviewing the AP3201AMHTR-G1 datasheet, AP3201AMHTR-G1 pinout, AP3201AMHTR-G1 application, or AP3201AMHTR-G1 equivalent, key selection criteria include input voltage range (4.75–18V), feedback reference (0.920V ±1.8%), soft-start capacitor timing (10ms @ 0.1µF), and EN pin logic thresholds (1.5V enable / 0.5V disable).
Technical Context
The AP3201A employs peak current-mode control with cycle-by-cycle current limiting and internal transconductance error amplifier (GEA = 700 µA/V) feeding a current comparator via the COMP pin. Its oscillator operates at 380kHz under normal conditions but reduces to 90kHz during short-circuit events for enhanced fault handling.
It integrates a high-side N-MOSFET (RDS(ON) = 0.22 Ω typ.) and relies on external bootstrap capacitor between BS and SW pins to drive the gate. Output voltage is set by resistor divider on FB pin with 0.920V nominal reference; OVP triggers at 1.1V and SCP activates when FB drops below 0.6V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.75V to 18V - supports wide-input industrial and consumer supplies including 12V bus systems. |
| Switching Frequency | 380kHz fixed - enables compact magnetics using standard off-the-shelf inductors optimized for this frequency. |
| Max Output Current | 2A continuous - sufficient for powering SoC cores, DDR memory, or display bias rails in portable electronics. |
| Feedback Reference | 0.920V ±1.8% - sets precise output voltage with external resistor divider; OVP threshold at 1.1V ensures safety margin. |
| Efficiency | Up to 93% - achieved via low RDS(ON) high-side switch (0.22Ω) and optimized gate drive architecture. |
| Soft-Start Time | 10ms with 0.1µF SS-to-GND capacitor - prevents inrush current and stabilizes startup in multi-rail systems. |
| Thermal Shutdown | 160°C with 30°C hysteresis - protects IC during overload or poor heatsinking while enabling automatic recovery. |
Pinout & Package
HMSOP-10 package with exposed thermal pad (2.5mm × 0.75mm), 0.5mm pitch, 5.1mm × 3.1mm body size. Pin 1 and 3 are NC or ground-tied; Pin 6 is GND; Pin 10 is SS for soft-start timing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3 NC | No connection or ground tie | Unused pins; recommended to connect to GND for noise immunity and thermal conduction. |
| 2 BS | Bootstrap supply node | Connects external bootstrap capacitor to SW; provides gate drive voltage above IN for high-side MOSFET. |
| 4 IN | Main power input | Accepts 4.75–18V; requires local 10µF ceramic capacitor to GND for stability and EMI suppression. |
| 5 SW | Power switch output | Drives external inductor; connects to bootstrap capacitor and inductor; carries pulsed 2A current. |
| 6 GND | Power and signal reference | Primary return path; must be low-impedance connection to exposed pad and input/output capacitors. |
| 7 FB | Voltage feedback input | Senses output via resistor divider; regulates output to 0.920V reference; triggers OVP/SCP at defined thresholds. |
| 8 COMP | Error amplifier output | Loop compensation node; accepts RC network to GND for stability; critical for transient response tuning. |
| 9 EN | Enable control input | Logic-level enable: >1.5V = active, <0.5V = shutdown (<1µA quiescent); open-drain compatible with pull-up. |
| 10 SS | Soft-start timing input | Capacitor-to-GND sets ramp time; 0.1µF = 10ms; floating disables soft-start for immediate turn-on. |
Key Features
| Feature | Design Value |
|---|---|
| Current-mode PWM control | Enables fast load transient response and inherent cycle-by-cycle current limiting without external sense resistor. |
| Integrated high-side N-MOSFET | RDS(ON) = 0.22Ω typ. reduces conduction loss and eliminates need for external high-side driver. |
| Built-in protection suite | UVLO (3.5–4.4V), thermal shutdown (160°C), OVP (1.1V), and SCP (FB < 0.6V) ensure robust operation in unregulated environments. |
| Programmable soft-start | Capacitor-controlled ramp prevents input inrush and output overshoot; configurable from 0–100ms via SS pin. |
| Low quiescent current | 1.5mA typical operating IQ and <10µA shutdown current extend battery life in always-on standby circuits. |
Applications
| LCD TV Power Supply | Set-Top Box Core Rail |
|---|---|
Use Scenario: Generating stable 3.3V/2A for main SoC and HDMI interface circuitry in 24–32-inch LCD TVs. IC Role / Device Role / Timing Role: Primary step-down regulator converting 12V bus to low-noise 3.3V domain with tight line/load regulation. Use Value: High efficiency (93%) minimizes heat in sealed chassis; 380kHz switching allows small 2.2µH inductor and low-profile 22µF output capacitor. |
Use Scenario: Providing clean 3.3V power to MPEG decoder, Ethernet PHY, and flash memory in cable/satellite STBs. IC Role / Device Role / Timing Role: Local point-of-load regulator with EN pin synchronized to system wake-up signals. Use Value: Programmable soft-start prevents brown-out during cold boot; built-in OVP protects downstream logic from overvoltage faults. |
| Portable DVD Player | Digital Photo Frame |
Use Scenario: Delivering regulated 3.3V to LCD backlight driver IC and video DAC in battery-powered portable DVD players. IC Role / Device Role / Timing Role: Main DC-DC converter operating from single-cell Li-ion (4.2V) or dual-cell NiMH (3.0–3.6V) via boost-buck hybrid input. Use Value: Wide 4.75–18V input accommodates upstream boost stage; low 1.5mA IQ extends playback time between charges. |
Use Scenario: Powering 3.3V microcontroller, SD card interface, and TFT display controller in wall-plug or USB-powered photo frames. IC Role / Device Role / Timing Role: Fixed-frequency buck regulator with EN pin controlled by MCU GPIO for scheduled power cycling. Use Value: Thermal shutdown (160°C) prevents damage during extended ambient exposure; HMSOP-10 footprint fits compact PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar asynchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2307DN-LF-Z (Monolithic Power) | 400kHz switching, 3A rating, RDS(ON) = 0.11Ω (HS), no integrated bootstrap diode; requires external bootstrap cap. | Higher current capability suits 5V→3.3V conversion at >2A loads; less suitable for space-constrained designs due to SO-8 package. | Select when higher output current or lower RDS(ON) is required; verify bootstrap design compatibility. |
| LM2678SD-3.3/NOPB (TI) | Fixed 3.3V output, 5A rating, 260kHz frequency, external MOSFETs; no integrated high-side switch. | Designed for higher-power applications requiring external FETs and adjustable loop compensation; lacks integrated OVP/SCP. | Choose for >3A loads or where full external control of power stage is preferred; adds board area and component count. |
Compared with MP2307DN-LF-Z and LM2678SD-3.3/NOPB, the AP3201AMHTR-G1 offers tighter integration (integrated HS-FET + bootstrap circuit), smaller HMSOP-10 footprint, and comprehensive protection set - making it optimal for cost-sensitive, space-limited 2A applications where full external control isn't needed.
Availability
AP3201AMHTR-G1 is available at Aetrix Electronics and suitable for LCD TV power rails, set-top box core supplies, and portable media player DC-DC conversion requiring stable component supply, RoHS-compliant green packaging, and tape-and-reel delivery for SMT production.
Supply support for AP3201AMHTR-G1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
BCD Semiconductor Manufacturing Limited is a Shanghai-based analog and power IC designer specializing in high-voltage, high-efficiency power management solutions for consumer, industrial, and automotive markets.
The AP3201A belongs to BCD's AP32xx series of integrated synchronous/asynchronous buck converters, designed specifically for compact, high-efficiency point-of-load regulation in cost-sensitive consumer electronics with strict thermal and footprint constraints.
FAQ
What is the minimum input voltage required for reliable operation of AP3201AMHTR-G1?
The AP3201AMHTR-G1 has a guaranteed operational minimum input voltage of 4.75V, with UVLO activation at 3.5V (rising) and hysteresis of 0.3V. Below 4.75V, output regulation degrades and may drop out; operation below 3.5V disables the IC entirely until VIN rises above 3.8V.
Can the AP3201AMHTR-G1 be used without connecting the SS pin?
Yes - leaving the SS pin unconnected disables the soft-start function, resulting in immediate output voltage ramp-up upon EN assertion. This is acceptable in systems where inrush current is managed externally, but risks overshoot or input droop if output capacitance exceeds 100µF without pre-biasing.
How does the AP3201AMHTR-G1 handle short-circuit conditions?
Under short-circuit, the FB pin voltage falls below 0.6V, triggering short-circuit protection that reduces switching frequency from 380kHz to 90kHz. This lowers average power dissipation and limits thermal stress while maintaining hiccup-mode recovery attempts until fault clears.
Is the HMSOP-10 package thermally enhanced, and how should the exposed pad be handled?
Yes - the HMSOP-10 package includes an exposed thermal pad (2.5mm × 0.75mm) that must be soldered to a dedicated PCB copper pour connected to GND for effective heat dissipation. Thermal resistance θJA is specified at 60°C/W only when the pad is properly thermally anchored per manufacturer layout guidelines.
AP3201AMHTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.75V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.92V
- Voltage - Output (Max):
- 16.2V
- Current - Output:
- 2A
- Frequency - Switching:
- 380kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-HMSOP
AP3201AMHTR-G1 FAQ
1.How can I place an order for AP3201AMHTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3201AMHTR-G1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AP3201AMHTR-G1 reliable?
The price and inventory of AP3201AMHTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3201AMHTR-G1 is usually 5 days.
3.What payment methods are accepted for AP3201AMHTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3201AMHTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3201AMHTR-G1?
AP3201AMHTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3201AMHTR-G1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AP3201AMHTR-G1?
For technical support, including AP3201AMHTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3201AMHTR-G1 requirements.
6.How does Aetrix verify that AP3201AMHTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP3201AMHTR-G1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AP3201AMHTR-G1 meets industry standards.
7.What is the process for return or replacement of AP3201AMHTR-G1?
All AP3201AMHTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3201AMHTR-G1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AP3201AMHTR-G1 part is unused and in its original packaging.
Return procedure for AP3201AMHTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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